Spink USA, Auction 341, Lot 35 Byzantine Empire. Constans II with Constantine IV (641-668). AV Solidus, struck 654-659. Constantinople, fifth Officina. 4.43 gms. Facing busts of Costans, with long beard, and young Constantine, both wearing crown and chlamys, cross above, between them, rev. Cross potent on four steps, legend ends "E", CONOB in ex. DOC II 25e, MIB III 26, SB 95...